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)(21,29)(22,33)(23,27)(24,38)(25,31)(26,36)(28,37)(30,44)(32,40)(34,48)(35,47)(39,49)(41,45)(42,50)(43,46) involution — undirected(3,5,7,13)(4,8,10,11)(6,14,15,12)(9,17,18,16)(19,21,23,31)(20,25,27,29)(22,34,35,30)(24,32,37,46)(26,41,42,39)(28,40,38,43)(33,44,47,48)(36,49,50,45)(19,22,24,36,23,35,37,50)(20,26,28,33,27,42,38,47)(21,30,32,45,31,34,46,49)(25,39,40,48,29,41,43,44)(3,6,7,15)(4,9,10,18)(5,12,13,14)(8,16,11,17)(21,31)(25,29)(30,34)(32,46)(39,41)(40,43)(44,48)(45,49)(4,10)(8,11)(9,18)(16,17)(20,27)(21,31)(26,42)(28,38)(30,34)(32,46)(33,47)(45,49) 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.