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