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)(33,34,40,43)(35,44,47,41)(36,48,38,39)(37,45,46,42)(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)(33,35,40,47)(34,41,43,44)(36,45,38,42)(37,39,46,48)(2,3)(7,9)(8,10)(14,15)(18,19)(23,25)(24,26)(31,32)(33,36,40,38)(34,39,43,48)(35,45,47,42)(37,41,46,44)(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)(33,37,40,46)(34,42,43,45)(35,39,47,48)(36,44,38,41)(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)(33,38,40,36)(34,39,43,48)(35,45,47,42)(37,44,46,41)(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)(33,39)(34,38)(35,46)(36,43)(37,47)(40,48)(41,42)(44,45)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.