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