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