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)(19,28,31,38,32,42,30,24)(20,25,35,40,33,39,34,46)(29,41,45,47,43,48,44,37)(1,3)(2,6)(4,11)(5,12)(7,14)(8,10)(9,15)(13,16)(17,19,21,30,23,32,22,31)(18,24,26,28,27,38,36,42)(20,29,34,44,33,43,35,45)(25,37,40,41,39,47,46,48)(2,7)(5,13)(6,14)(8,9)(10,15)(12,16)(20,33)(25,39)(29,43)(34,35)(37,47)(40,46)(41,48)(44,45) involution — undirected(3,11)(6,10)(12,16)(14,15)(17,20,22,35,23,33,21,34)(18,25,26,40,27,39,36,46)(19,29,31,45,32,43,30,44)(24,37,28,41,38,47,42,48)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.