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