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