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