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