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