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