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