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