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