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