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