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