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