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