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