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