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