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