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