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