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