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