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