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