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