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