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