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