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