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