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