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