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