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