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