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)(11,14,16,15)(18,19)(20,24)(25,26,28,30)(27,31,32,29)(9,10)(11,14)(12,13)(15,16)(18,19)(22,23)(27,32)(29,31) involution — undirected(10,13)(14,15)(17,18,21,19)(20,22,24,23)(25,26)(27,29)(28,30)(31,32)(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)(26,29)(28,32)(30,31)(1,3,4,7)(2,5,6,8)(9,10)(11,15)(12,13)(14,16)(17,20,21,24)(18,22,19,23)(25,26)(27,29)(28,30)(31,32)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.