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