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