I say female for 3 reasons.
Vent is close to anus.
General genital area is close to anal fin.
Thickness and roundness of genital papilla.
...but I could be completely wrong. :lol:
Admittedly, I still don't have venting of SA/CA cichlids totally down just yet but going by what I've observed in fish that have been confirmed through successful spawning I've been able to take note of some physical differences.