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