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