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