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