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