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