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