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