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)(20,26,36,44)(21,29,23,27)(25,38,42,35)(31,40,32,43)(33,41,37,45)(39,48,46,47)(1,2)(3,6)(4,5)(7,8)(9,10)(11,15)(12,14)(13,16)(17,19)(18,24)(20,31)(21,37)(22,34)(23,33)(25,39)(26,43)(27,45)(28,30)(29,41)(32,36)(35,48)(38,47)(40,44)(42,46) involution — undirected(9,11)(10,13)(12,16)(14,15)(17,20,22,36)(18,25,28,42)(19,31,34,32)(21,35,23,38)(24,39,30,46)(26,29,44,27)(33,47,37,48)(40,45,43,41)(2,5)(6,8)(11,16)(13,15)(17,20)(18,26)(19,32)(21,38)(22,36)(23,35)(24,40)(25,27)(28,44)(29,42)(30,43)(31,34)(33,47)(37,48)(39,41)(45,46) involution — undirected(1,3,4,7)(2,6,5,8)(10,14)(13,15)(17,21,22,23)(18,27,28,29)(19,33,34,37)(20,35,36,38)(24,41,30,45)(25,26,42,44)(31,47,32,48)(39,40,46,43)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.