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