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)(25,26,28,29)(1,3)(2,5)(4,8)(6,7)(9,10)(11,14)(12,13)(15,16)(17,19,23,22)(18,24,21,31)(20,26,30,29)(25,27,28,32)(2,6)(3,8)(10,13)(14,16)(17,20,22,29,23,30,19,26)(18,25,24,27,21,28,31,32)(2,6)(5,7)(9,11,12,15)(10,14,13,16)(17,21,23,18)(19,24,22,31)(20,28,30,25)(26,27,29,32)(10,13)(14,16)(17,19,23,22)(18,24,21,31)(20,26,30,29)(25,27,28,32)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.