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