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