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