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