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