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