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