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