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