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