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