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