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