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