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