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