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