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