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