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