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Here's the list. The basic idea was to make strength and intelligence masculine stats, dexterity and charisma feminine stats, and split constitution and wisdom. Men hit harder and can take a hit, run faster, think logically and hold their ground, while women are more stealthy, flexible, have strong immune systems, and are more perceptive and empathetic. Optionally, you could let them pick one of these every 4th level in place of the normal stat point gain in 3.5.

Male traits: Pick 2 at character creation, 1 of which must add to strength or intelligence.
Strong: +2 Strength
Powerful: +1 Strength, +2 to melee damage rolls (+3 if 2 handed)
Athletic: +1 Strength, +2 to Climb, Jump, and Swim checks, +5’ move speed
Hardy: +2 Constitution
Sturdy: +1 Constitution, +2 HP, +1 HP/HD, +2 to Concentration checks
Intelligent: +2 Intelligence
Knowledgeable: +1 Intelligence, +2 to Appraise, Decipher Script, Spellcraft and all Knowledge checks
Clever: +1 Intelligence, +2 to Search, Disable Device, Forgery, and all Craft checks
Wise: +2 Wisdom
Brave: +1 Wisdom, +2 to Will saves and Survival checks

Female traits: Pick 2 at character creation, 1 of which must add to dexterity or charisma.
Agile: +2 Dexterity
Quick: +1 Dexterity, +1 to AC when not denied dex, +2 to Reflex saves, +1 to Initiative
Sleek: +1 Dexterity, +2 to Hide, Move Silently, Escape Artist, Balance, Tumble, Sleight of Hand, and Use Rope checks
Hardy: +2 Constitution
Healthy: +1 Constitution, +2 to Fortitude Saves
Wise: +2 Wisdom
Observant: +1 Wisdom, +2 to Listen, Spot, Sense Motive, and Heal checks
Charismatic: +2 Charisma
Composed: +1 Charisma, +2 to Diplomacy, Gather Information, Handle Animal, and Intimidate checks
Mysterious: +1 Charisma, +2 to Bluff, Disguise, and all Perform checks