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