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