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