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