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