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)(11,15)(12,16)(13,14)(18,22)(19,20)(25,26)(27,29)(28,31)(30,32) involution — undirected(2,5)(6,7)(10,14)(15,16)(17,18,21,22)(19,23,20,24)(25,26,28,31)(27,30,32,29)(9,11,13,12)(10,15,14,16)(17,19,21,20)(18,23,22,24)(25,27)(26,29)(28,32)(30,31)(1,3,4,8)(2,6,5,7)(9,12,13,11)(10,15,14,16)(17,20,21,19)(18,23,22,24)(25,27)(26,30)(28,32)(29,31)(1,2)(3,7)(4,5)(6,8)(9,10)(11,15)(12,16)(13,14)(17,18)(19,23)(20,24)(21,22)(25,26)(27,29)(28,31)(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.