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