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