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