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