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