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