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