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