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