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