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