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