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