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