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