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