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