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)(11,14)(12,15)(13,16)(17,18,21,20)(19,25,27,32)(22,29,30,24)(23,31,26,28)(1,3,5,8)(2,6,4,7)(9,11,14,10)(12,15,13,16)(17,18)(19,26)(20,21)(22,24)(23,27)(25,31)(28,32)(29,30)(9,12)(10,15)(11,16)(13,14)(17,19,22,28,21,27,30,31)(18,23,24,25,20,26,29,32)(1,4,5,2)(3,6,8,7)(9,13,14,12)(10,16,11,15)(17,20,21,18)(19,26,27,23)(22,29,30,24)(25,28,32,31)(10,11)(15,16)(18,20)(19,27)(24,29)(28,31) involution — undirectedA 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.