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