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