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