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