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