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)(11,14)(12,15)(13,16)(18,23)(21,29)(24,30)(25,31)(26,32)(27,28)(9,11)(10,13)(12,16)(14,15)(17,18,21,23,22,26,29,32)(19,25,27,31,20,24,28,30)(1,3,4,8)(2,5,6,7)(11,16)(13,14)(17,19,22,20)(18,24,26,25)(21,27,29,28)(23,30,32,31)(9,11)(10,14)(12,16)(13,15)(17,20,22,19)(18,25,26,24)(21,28,29,27)(23,31,32,30)(11,16)(13,14)(19,20)(24,25)(27,28)(30,31) 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.