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