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