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