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