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