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