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