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