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