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