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