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