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