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