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