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