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