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