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