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