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