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