If a god existed, it could be more of what some may consider as being alien as opposed to a representation of a human being. It would have no use for ears, a stomach, a mouth, eyes, a tongue, bowels, hands, feet and everything else that constitutes physicality that developed for a species on just one planet in the universe.
It could just be a colourless wisp of anti-matter.....
Not that there's a scintilla of evidence for such a fanciful concept, of course.....