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)(11,14)(12,15)(13,16)(17,18,23,21)(19,27,30,28)(20,25,26,22)(24,32,31,29)(11,12)(14,15)(17,19,23,30)(18,24,21,31)(20,27,26,28)(22,32,25,29)(2,5)(6,8)(9,11,13,12)(10,14,16,15)(17,20,23,26)(18,25,21,22)(19,28,30,27)(24,32,31,29)(9,12,13,11)(10,15,16,14)(17,21,23,18)(19,24,30,31)(20,25,26,22)(27,32,28,29)(1,3,4,7)(2,6,5,8)(10,16)(14,15)(18,21)(20,26)(24,31)(27,28)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.