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