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