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