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