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)(17,18)(19,27)(20,30)(21,23)(22,32)(24,28)(25,31)(26,29)(1,3,5,4)(2,6,8,7)(9,10,13,14)(11,16,12,15)(18,23)(19,28)(20,31)(22,29)(24,30)(25,27)(9,11,13,12)(10,15,14,16)(17,19,29,31,21,20,22,28)(18,24,32,30,23,25,26,27)(9,11,13,12)(10,16,14,15)(17,20,22,31,21,19,29,28)(18,25,26,30,23,24,32,27)(1,4,5,3)(2,7,8,6)(9,12,13,11)(10,15,14,16)(18,23)(24,25)(26,32)(27,30)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.