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