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