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