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