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