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