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