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