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