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