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