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