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