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