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