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