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