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