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