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