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