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