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