One vertex per element, one color per generator, with an edge from x to x·s.
(1,2) involution — undirected(5,11)(6,13)(8,16)(9,14)(12,15)(17,18)(19,20)(21,31)(22,36)(23,28)(24,29)(25,30)(26,34)(27,38)(32,40)(33,41)(35,44)(37,42)(39,43)(45,47)(46,49)(48,50) involution — undirected(3,4,7,10)(5,8,12,17)(6,14,13,9)(11,18,15,16)(19,21)(20,26)(22,32)(23,33)(24,34)(25,35)(27,40)(28,31)(29,44)(30,41)(36,49)(37,46)(38,47)(39,48)(42,50)(43,45)(3,5)(4,8)(6,15)(7,12)(9,18)(10,17)(11,13)(14,16)(19,22,25,39)(20,27,30,42)(21,32,35,48)(23,38,24,37)(26,40,41,50)(28,43,29,36)(31,45,44,49)(33,47,34,46)(19,23,25,24)(20,28,30,29)(21,33,35,34)(22,37,39,38)(26,31,41,44)(27,36,42,43)(32,46,48,47)(40,49,50,45)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.