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