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