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