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