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