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