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