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