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