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