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