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)(11,14)(12,13)(15,16)(17,18,23,24,22,26,21,19)(20,25,30,31,29,32,28,27)(2,5)(6,8)(18,24)(19,26)(20,28)(21,23)(27,31)(29,30) involution — undirected(1,3,4,7)(2,6,5,8)(10,13)(14,16)(17,19,21,26,22,24,23,18)(20,27,28,32,29,31,30,25)(17,20,21,28,22,29,23,30)(18,25,19,27,26,32,24,31)(9,11,12,15)(10,14,13,16)(18,26)(19,24)(25,32)(27,31)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.