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