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