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