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