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