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