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