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