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)(11,14)(12,16)(13,15)(17,18,24,26)(19,23,21,22)(20,28,31,27)(25,30,32,29)(1,3,5,4)(2,6,8,7)(9,11,14,10)(12,16,13,15)(17,19)(18,23)(20,25)(21,24)(22,26)(27,29)(28,30)(31,32)(10,11)(15,16)(17,20,22,29,24,31,23,30)(18,25,21,28,26,32,19,27)(9,12,14,13)(10,15,11,16)(17,21,22,26,24,19,23,18)(20,27,29,25,31,28,30,32)(1,4,5,3)(2,7,8,6)(9,13,14,12)(10,16,11,15)(17,22,24,23)(18,19,26,21)(20,29,31,30)(25,27,32,28)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.