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