One vertex per element, one color per generator, with an edge from x to x·s.
(6,12)(13,16)(17,18,25,32)(19,33,39,61)(20,40,44,65)(21,29,47,63)(22,48,46,28)(23,31,24,30)(26,52,57,36)(27,51,60,43)(34,68,72,77)(35,56,49,55)(37,54,38,67)(41,62,45,58)(42,64,50,59)(53,73,80,69)(66,75,78,71)(70,76,74,79)(1,2)(3,6)(4,7)(5,8)(9,13)(10,12)(11,14)(15,16)(17,19)(18,26)(20,34)(21,36)(22,49)(23,38)(24,37)(25,39)(27,53)(28,61)(29,54)(30,56)(31,55)(32,57)(33,48)(35,46)(40,76)(41,70)(42,73)(43,75)(44,72)(45,74)(47,52)(50,69)(51,71)(58,66)(59,77)(60,80)(62,78)(63,67)(64,68)(65,79) involution — undirected(1,3)(2,6)(4,9)(5,10)(7,13)(8,12)(11,15)(14,16)(17,20)(18,27)(19,34)(21,45)(22,50)(23,51)(24,43)(25,44)(26,53)(28,62)(29,64)(30,65)(31,40)(32,60)(33,66)(35,73)(36,74)(37,75)(38,71)(39,72)(41,47)(42,46)(48,58)(49,69)(52,70)(54,68)(55,76)(56,79)(57,80)(59,63)(61,78)(67,77) involution — undirected(1,4,5,11)(2,7,8,14)(3,9,10,15)(6,13,12,16)(17,21,24,46,25,47,23,22)(18,28,31,29,32,48,30,63)(19,35,38,36,39,49,37,52)(20,41,43,50,44,45,51,42)(26,54,56,61,57,67,55,33)(27,58,40,59,60,62,65,64)(34,69,71,70,72,73,75,74)(53,77,79,66,80,68,76,78)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.