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