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