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