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