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