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