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