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