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