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