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)(35,42)(36,39)(37,45)(38,41)(40,46)(43,47)(44,48)(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)(33,35)(34,39)(36,38)(37,43)(40,47)(41,42)(44,46)(45,48)(2,7)(3,10)(9,12)(11,16)(18,20)(23,25)(24,28)(30,31)(33,34,38,41)(35,39,36,42)(37,40,46,45)(43,47,44,48)(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)(33,34)(35,42)(36,39)(37,40)(38,41)(43,48)(44,47)(45,46)(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)(33,36,38,35)(34,39,41,42)(37,43,46,44)(40,48,45,47)(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)(33,37,38,46)(34,40,41,45)(35,43,36,44)(39,47,42,48)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.