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