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