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