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