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