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