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