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