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