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