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