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