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