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