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