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