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