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