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