One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,5)(3,6,7,8)(17,18,23,27,22,26,31,32)(19,28,21,30,29,24,25,20)(2,5)(3,7)(10,13)(11,15)(17,19)(18,24)(20,27)(21,23)(22,29)(25,31)(26,28)(30,32) involution — undirected(1,3,4,7)(2,6,5,8)(9,10)(11,14)(12,13)(15,16)(17,20,22,30)(18,25,26,21)(19,27,29,32)(23,24,31,28)(2,5)(6,8)(10,13)(14,16)(17,21,22,25)(18,20,26,30)(19,23,29,31)(24,27,28,32)(9,11,12,15)(10,14,13,16)(18,26)(19,29)(21,25)(27,32)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.