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