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)(19,28,30,24)(20,26,31,25)(21,32,29,22)(33,34,38,42)(35,39,45,48)(36,37,41,40)(43,44,47,46)(1,2)(3,6)(4,7)(5,8)(9,12)(10,14)(11,15)(13,16)(17,19)(18,24)(20,21)(22,26)(23,30)(25,32)(27,28)(29,31)(33,35,38,45)(34,39,42,48)(36,43,41,47)(37,44,40,46)(2,3)(7,9)(8,10)(15,16)(17,20,23,31)(18,25,27,26)(19,21,30,29)(22,24,32,28)(33,36,38,41)(34,40,42,37)(35,43,45,47)(39,46,48,44)(1,3,6,2)(4,9,12,7)(5,8,14,10)(11,15,13,16)(17,20)(18,26)(19,29)(21,30)(22,28)(23,31)(24,32)(25,27)(33,35)(34,39)(36,43)(37,44)(38,45)(40,46)(41,47)(42,48)(1,4)(2,7)(3,9)(5,13)(6,12)(8,16)(10,15)(11,14)(17,21,23,29)(18,22,27,32)(19,20,30,31)(24,26,28,25)(33,34)(35,39)(36,40)(37,41)(38,42)(43,46)(44,47)(45,48)(1,5,6,14)(2,8,3,10)(4,11,12,13)(7,15,9,16)(17,22)(18,21)(19,26)(20,24)(23,32)(25,30)(27,29)(28,31)(33,37,38,40)(34,41,42,36)(35,44,45,46)(39,47,48,43)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.