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