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