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