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