One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,3,4)(5,6)(7,10)(8,9)(11,12)(13,14,18,25,20,24,19,26)(15,27,30,39,32,40,31,21)(16,22,17,35,34,42,33,23)(28,38,44,43,36,41,29,37)(2,4)(13,15)(14,21)(16,29)(17,36)(18,31)(19,30)(20,32)(22,41)(23,37)(24,39)(25,40)(26,27)(28,33)(34,44)(35,43)(38,42) involution — undirected(6,9)(10,12)(13,16,19,33,20,34,18,17)(14,22,26,23,24,42,25,35)(15,28,31,29,32,36,30,44)(21,37,40,41,39,43,27,38)(13,17,18,34,20,33,19,16)(14,23,25,22,24,35,26,42)(15,29,30,28,32,44,31,36)(21,38,27,43,39,41,40,37)(5,7,8,11)(6,10,9,12)(14,24)(21,39)(22,42)(23,35)(25,26)(27,40)(37,43)(38,41)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.