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