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