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