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