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