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