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