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