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