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