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