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