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