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