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