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