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