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