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