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