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