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