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