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