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