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)(17,18,20,23,21,24,28,31)(19,25,27,32,26,22,29,30)(1,3)(2,5)(4,7)(6,8)(9,10,13,14)(11,16,12,15)(19,26)(22,25)(27,29)(30,32)(2,6)(3,7)(9,11,13,12)(10,15,14,16)(2,6)(5,8)(9,11,13,12)(10,15,14,16)(17,19,20,27,21,26,28,29)(18,22,23,30,24,25,31,32)(9,12,13,11)(10,15,14,16)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.