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