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