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