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