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