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