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