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