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