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