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