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