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