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)(17,18,23,21)(19,26,22,24)(20,28,30,25)(27,31,29,32)(33,34,38,37)(35,39,41,43)(36,40,44,45)(42,46,47,48)(1,3,6,11)(2,7,4,9)(5,10,13,16)(8,14,12,15)(17,19,23,22)(18,24,21,26)(20,27,30,29)(25,31,28,32)(35,41)(39,43)(42,47)(46,48)(2,4)(7,9)(8,12)(14,15)(17,20,23,30)(18,25,21,28)(19,27,22,29)(24,31,26,32)(33,35,38,41)(34,39,37,43)(36,42,44,47)(40,46,45,48)(1,4,6,2)(3,9,11,7)(5,12,13,8)(10,15,16,14)(17,20)(18,25)(19,27)(21,28)(22,29)(23,30)(24,31)(26,32)(1,3)(2,7)(4,9)(5,10)(6,11)(8,14)(12,15)(13,16)(17,21,23,18)(19,24,22,26)(20,28,30,25)(27,31,29,32)(33,36)(34,40)(35,42)(37,45)(38,44)(39,46)(41,47)(43,48)(1,5,6,13)(2,8,4,12)(3,10,11,16)(7,14,9,15)(17,22,23,19)(18,26,21,24)(20,29,30,27)(25,32,28,31)(33,37,38,34)(35,43,41,39)(36,40,44,45)(42,46,47,48)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.