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