One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,10)(4,8)(5,7)(6,11)(9,13)(12,15)(14,16)(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)(5,12)(7,14)(8,10)(9,15)(13,16)(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)(5,13)(6,14)(8,9)(10,15)(12,16)(19,29)(24,37)(28,41)(30,43)(31,32)(38,47)(42,48)(44,45) involution — undirected(3,11)(6,10)(12,16)(14,15)(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.