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