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