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