Ancient Greece was polytheistic. At a personal level, both Plato and Aristotle were polytheists--at least that is what they would have said in a public forum if asked what religious beliefs they held, aware of what happened to Socrates. So, at a personal level, there is no difference between their religious beliefs. There is no "Plato's God" v "Aristotle's God." Plato raised a serious problem for polytheism as a moral theory that also applies to monotheism, known as the Euthyphro Dilemma. Look it up.
Both Plato and Aristotle were trying to express an aspect of reality that cannot be expressed in human language. Does placing two different emphases on something that is properly inexpressible make one version true and the other a "noble lie" or are both responses equally both truthful and false?