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