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