Since Saudi Arabia is not a signatory on the International Covenant on Civil and Political Rights, it seems to me that as far as they are concerned, they're not doing anything wrong.
As even North Korea is party to that agreement, I think it's fair to say that there's a certain delusional quality to such thinking, and that all condemning of human rights abuses are simply going to be viewed like calling the cops on a party that is technically obeying noise statutes.
Or in other words, Saudi Arabia is complaining about demands to play by rules they never agreed to follow.