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