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