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