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