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