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