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