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