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