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