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