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