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