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