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