There is nothing we can do now. The men have been acquitted. There is no appeal allowed against the verdict of a jury.
I am not saying it is right or correct or whatever, but this kind of thing is happening every Friday and Saturday night all over the world where drink and possibly drugs are taken. Sports men can be chased by certain women, it happens everywhere, that does not mean it should result in rape of course.
It really is one person's word against the other, unless of course there is incontrovertable proof of violent rape/assault, which I don't think was the case here.
So the burden of proof is on the woman to prove, rather than on the man to disprove. It was ever thus, and rape is notoriously difficult to prosecute with a guilty verdict, which can then of course be appealed etc.
I hope the woman is alright. It must be soul crushing for her today.
But realistically, what can be done? I wish I knew.