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