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