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