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