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