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