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)(11,13)(12,14)(15,16)(17,18,19,25,22,24,28,23)(20,27,29,32,30,31,26,21)(1,3)(2,5)(4,8)(6,7)(9,10)(11,15)(12,14)(13,16)(17,19,22,28)(18,23,24,25)(20,29,30,26)(21,31,32,27)(9,11)(10,13)(12,16)(14,15)(17,20,22,30)(18,21,24,32)(19,26,28,29)(23,27,25,31)(3,8)(5,7)(11,16)(13,15)(17,21)(18,20)(19,27)(22,32)(23,26)(24,30)(25,29)(28,31) involution — undirected(10,14)(13,15)(18,24)(21,32)(23,25)(27,31) 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.