One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,5)(3,7,8,6)(9,10,14,16)(11,15,12,13)(17,18,21,24)(19,25,27,23)(20,22,30,31)(26,28,29,32)(2,5)(6,7)(9,11,14,12)(10,13,16,15)(17,19,21,27)(18,23,24,25)(20,29,30,26)(22,28,31,32)(9,12,15,10,14,11,13,16)(17,20,22,24,21,30,31,18)(19,26,28,23,27,29,32,25)(1,3,4,8)(2,6,5,7)(9,13,14,15)(10,12,16,11)(18,24)(19,27)(20,30)(28,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.