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