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