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