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