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