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