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)(19,31,33,45)(20,35,39,48)(21,27)(22,29)(23,30)(24,28)(25,34,43,37)(26,38,46,41)(32,42)(36,44)(40,47)(1,2,5,8)(3,9,10,6)(4,13,12,7)(11,14,16,15)(17,19,24,33)(18,25,28,43)(20,36,39,32)(21,38,40,41)(22,37,23,34)(26,44,46,42)(27,35,47,48)(29,45,30,31)(1,3)(2,6)(4,11)(5,10)(7,14)(8,9)(12,16)(13,15)(17,20,24,39)(18,26,28,46)(19,32,33,36)(21,34,40,37)(22,38,23,41)(25,42,43,44)(27,31,47,45)(29,35,30,48)(3,10)(6,9)(11,16)(14,15)(17,21,23,36,24,40,22,32)(18,27,30,44,28,47,29,42)(19,20,37,41,33,39,34,38)(25,26,45,48,43,46,31,35)(1,4,5,12)(2,7,8,13)(3,11,10,16)(6,14,9,15)(18,28)(19,33)(21,40)(26,46)(29,30)(32,36)(34,37)(35,48)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.