Two part answer:
"Yes", God can be sexy, as in the usage of someone wanting to have sex with another person. Saying "I think you're sexy" has the built-in implication that I want to have sex with you. So, yes, I'm sure many people would LOVE to have sex with God.
But also "No", in the sense of someone who is "into" sex. Here's my reasoning: Despite all the religious propaganda to the contrary, the Judeo-Christian-Muslim God(same diety) does not have gender. "God" cannot have gender, because gender is useful for only one thig - procreation. With this in mind, remember that you can only procreate with one of your own kind. Since the prevailing dogma states that there is only one "God", then there is no possibility of procreation. If you cannot procreate you don't need gender; without gender you cannot have sex. At least if we truly are in "His" own image. Who knows, maybe "God" is actually an amoeba! Assexual.