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