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