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)(17,18,22,24)(19,28,30,25)(20,26,29,32)(21,31,23,27)(1,3,5,4)(2,6,8,7)(18,24)(19,29)(20,30)(21,23)(25,32)(26,28)(1,3,5,4)(2,7,8,6)(10,13)(14,16)(17,19)(18,25)(20,23)(21,29)(22,30)(24,28)(26,31)(27,32)(1,4,5,3)(2,6,8,7)(17,20,22,29)(18,26,24,32)(19,23,30,21)(25,31,28,27)(9,11,12,15)(10,14,13,16)(17,21,22,23)(18,27,24,31)(19,29,30,20)(25,32,28,26)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.