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)(17,18,22,25)(19,27,28,45)(20,31,35,46)(21,36,33,26)(23,38,39,29)(24,41,43,34)(30,47,37,42)(32,44,48,40)(1,3,6,14)(2,7,9,16)(4,13,5,12)(8,11,15,10)(23,39)(27,45)(40,44)(42,47)(1,2)(3,11)(4,8)(5,15)(6,9)(7,12)(10,14)(13,16)(17,19,22,28)(18,23,25,39)(20,32,35,48)(21,37,33,30)(24,42,43,47)(26,44,36,40)(27,46,45,31)(29,41,38,34)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.