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