One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,7)(3,8,4,6)(9,10,14,13)(11,16,12,15)(17,18,21,24)(19,26,28,32)(20,23,30,25)(22,31,27,29)(1,3,5,4)(2,6,7,8)(9,11,14,12)(10,15,13,16)(17,18)(19,27)(20,25)(21,24)(22,28)(23,30)(26,31)(29,32)(1,4,5,3)(2,6,7,8)(9,10,14,13)(11,16,12,15)(17,19,20,29,21,28,30,31)(18,22,25,26,24,27,23,32)(9,12,14,11)(10,15,13,16)(19,28)(22,27)(26,32)(29,31)(9,13,14,10)(11,16,12,15)(17,20,21,30)(18,23,24,25)(19,29,28,31)(22,32,27,26)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.