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