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