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