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