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