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)(19,25)(20,28)(21,23)(22,26)(24,30)(27,32)(29,31)(33,34,36,39,37,40,43,46)(35,38,42,45,41,44,47,48)(1,3,6,14)(2,7,10,11)(4,12,5,13)(8,15,9,16)(17,19,21,27)(18,22,23,31)(20,29,30,26)(24,32,28,25)(1,4,6,5)(2,8,10,9)(3,12,14,13)(7,15,11,16)(18,23)(22,31)(24,28)(25,32)(33,35)(34,38)(36,42)(37,41)(39,45)(40,44)(43,47)(46,48)(1,5,6,4)(2,9,10,8)(3,13,14,12)(7,16,11,15)(35,41)(38,44)(42,47)(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.