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