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)(15,20)(16,26)(17,22)(18,32)(19,23)(21,28)(24,35)(25,33)(27,39)(29,40)(30,36)(31,37)(34,41)(38,44)(42,43) involution — undirected(6,9)(10,12)(13,15,19,18)(14,20,23,32)(16,24,29,28)(17,30,31,25)(21,26,35,40)(22,36,37,33)(27,41,42,38)(34,43,44,39)(13,16,18,28,19,29,15,24)(14,21,20,26,23,35,32,40)(17,27,30,41,31,42,25,38)(22,34,33,39,37,44,36,43)(2,4)(13,17)(14,22)(15,25)(16,27)(18,30)(19,31)(20,33)(21,34)(23,37)(24,38)(26,39)(28,41)(29,42)(32,36)(35,44)(40,43) involution — undirected(5,7,8,11)(6,10,9,12)(17,31)(22,37)(25,30)(27,42)(33,36)(34,44)(38,41)(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.