You won't be able to tell by looks, women of all shapes and sizes have various drives, and even those drives vary day to day and situation to situation for most women. Finding a woman with a high drive doesn't mean she will always keep it, and finding someone that is a virgin with no interest in sex may later develop a high drive after doing it.
Since you won't be having sex until marriage, you really just can't be 100 percent certain, but in actuality no one can. Some couples that both have high sex drives before marriage, change during marriage and one partner is unsatisfied.
If you have a high sex drive, it will just be your job during marriage to romance her and please her so that she enjoys it enough to want to do it as much as you do. You should be able to tell if someone is comfortable or interested in affection which can be an indicator of future intimacy, I think.
Like when you go to hold her hand if she pulls away and doesn't like it or if she holds your hand back and caresses it etc.. little things can show that someone is more playful and fun or more reserved and turned off by closeness.