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