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