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