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