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