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