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