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)(12,16)(13,14)(18,22)(19,25)(24,29)(27,31)(34,39)(36,40)(37,45)(42,46)(10,14)(11,16)(20,28)(24,29)(27,31)(30,32)(33,34,38,39)(35,36,43,40)(37,41,45,47)(42,44,46,48)(11,16)(12,15)(17,18)(19,26)(20,24)(21,22)(23,25)(27,32)(28,29)(30,31)(33,35,38,43)(34,40,39,36)(37,46,45,42)(41,44,47,48)(1,2)(3,5)(4,6)(7,8)(9,11,13,16)(10,15,14,12)(17,19)(18,23)(20,27)(21,25)(22,26)(24,30)(28,31)(29,32)(33,36,38,40)(34,35,39,43)(37,44,45,48)(41,42,47,46)(1,3,4,7)(2,5,6,8)(9,12,13,15)(10,16,14,11)(17,20)(18,24)(19,27)(21,28)(22,29)(23,30)(25,31)(26,32)(33,37)(34,41)(35,42)(36,44)(38,45)(39,47)(40,48)(43,46)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.