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