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