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