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