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