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