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