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