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