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