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