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