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