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