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