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)(19,25)(20,29)(21,22)(23,28)(24,27)(26,31)(30,32)(2,5)(3,7)(9,10)(11,15)(12,14)(13,16)(18,22)(19,26)(24,29)(28,32) involution — undirected(2,5)(6,8)(9,11)(10,13)(12,16)(14,15)(17,19,27,32,21,26,20,28)(18,23,29,31,22,30,24,25)(1,3,4,7)(2,6,5,8)(10,14)(11,16)(19,26)(23,30)(25,31)(28,32)(2,5)(6,8)(10,14)(13,15)(17,20,21,27)(18,24,22,29)(19,28,26,32)(23,25,30,31)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.