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