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