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