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