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