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