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