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