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