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