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