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