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