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