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