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