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