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