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