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