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