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