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