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