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