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