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