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