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