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