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