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