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