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