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