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