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