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