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