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