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