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