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