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