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