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