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