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