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