One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,6)(3,5,7,8)(9,10,13,12)(11,14,16,15)(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)(1,3,4,7)(2,5,6,8)(9,11,13,16)(10,14,12,15)(18,22)(23,25)(24,28)(30,31)(35,42)(37,45)(39,41)(40,44)(1,3)(2,5)(4,7)(6,8)(9,12,13,10)(11,14,16,15)(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)(9,11)(10,15)(12,14)(13,16)(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)(1,2)(3,5)(4,6)(7,8)(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.