One vertex per element, one color per generator, with an edge from x to x·s.
(2,7)(4,5)(8,14)(9,13)(10,12)(15,16)(17,18,21,24)(19,22,26,29)(20,23,27,30)(25,31,32,28)(33,34,37,41)(35,38,43,47)(36,39,44,40)(42,45,48,46)(1,2)(3,8)(4,7)(5,13)(6,9)(10,15)(11,16)(12,14)(17,19)(18,22)(20,25)(21,26)(23,28)(24,29)(27,32)(30,31)(33,35,37,43)(34,38,41,47)(36,42,44,48)(39,45,40,46)(1,3,6,11)(2,8,9,16)(4,12,5,10)(7,14,13,15)(17,20)(18,23)(19,25)(21,27)(22,28)(24,30)(26,32)(29,31)(34,39)(36,44)(38,45)(40,41)(42,48)(46,47)(1,4,6,5)(2,7,9,13)(3,10,11,12)(8,15,16,14)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.