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