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