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