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