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