One vertex per element, one color per generator, with an edge from x to x·s.
(1,2) involution — undirected(3,4,8,5)(6,13,14,18)(7,12,17,10)(9,16,11,15)(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)(3,5,8,4)(6,11,14,9)(7,10,17,12)(13,16,18,15)(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)(3,6)(4,9)(5,11)(7,16)(8,14)(10,18)(12,13)(15,17)(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.