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