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