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