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