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