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