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