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