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