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