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