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