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