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