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