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