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)(19,22)(20,24)(21,23)(25,27)(26,30)(28,32)(29,31)(1,2)(3,5)(4,6)(7,8)(10,14)(11,15)(17,19)(18,22)(20,28)(21,27)(23,25)(24,32)(26,31)(29,30) involution — undirected(3,7)(5,8)(9,11)(10,12)(13,15)(14,16)(18,21)(19,25)(24,29)(26,28) involution — undirected(1,2)(3,5)(4,6)(7,8)(9,12)(10,11)(13,16)(14,15)(17,20,23,31)(18,24,21,29)(19,26,25,28)(22,30,27,32)(1,3,4,7)(2,5,6,8)(17,21,23,18)(19,27,25,22)(20,29,31,24)(26,32,28,30)(1,2)(3,5)(4,6)(7,8)(17,22,23,27)(18,25,21,19)(20,30,31,32)(24,28,29,26)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.