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