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