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