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