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