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