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