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