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