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