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