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