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