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