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