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