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