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)(17,18,22,27)(19,29,30,24)(20,25,31,32)(21,28,23,26)(2,6)(7,8)(9,11)(10,13)(12,16)(14,15)(17,19,22,30)(18,24,27,29)(20,23,31,21)(25,28,32,26)(1,3,5,4)(2,7,6,8)(10,14)(11,16)(17,19,23,20,22,30,21,31)(18,25,28,29,27,32,26,24)(1,4,5,3)(2,8,6,7)(10,14)(13,15)(17,20,23,30,22,31,21,19)(18,24,28,25,27,29,26,32)(2,6)(7,8)(10,14)(13,15)(17,21,22,23)(18,26,27,28)(19,20,30,31)(24,25,29,32)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.