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