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