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