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