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