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