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