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