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