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