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