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