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)(19,23)(20,27)(21,22)(24,29)(25,30)(26,32)(28,31)(33,34)(35,38)(36,39)(37,42)(40,45)(41,44)(43,47)(46,48) involution — undirected(3,9)(7,13)(10,15)(14,16)(18,22)(19,25)(24,27)(26,28)(33,34,38,35)(36,41,44,39)(37,40,45,42)(43,47,48,46)(2,6)(7,13)(8,11)(14,16)(18,22)(19,25)(24,27)(26,28)(34,35)(39,41)(40,42)(46,47) involution — undirected(1,2)(3,7)(4,8)(5,6)(9,13)(10,14)(11,12)(15,16)(17,18)(19,23)(20,24)(21,22)(25,30)(26,31)(27,29)(28,32)(33,35,38,34)(36,41,44,39)(37,42,45,40)(43,47,48,46)(1,3,5,9)(2,7,6,13)(4,10,12,15)(8,14,11,16)(17,19,21,25)(18,23,22,30)(20,28,29,26)(24,32,27,31)(33,36)(34,39)(35,41)(37,43)(38,44)(40,46)(42,47)(45,48)(1,4)(2,8)(3,10)(5,12)(6,11)(7,14)(9,15)(13,16)(17,20,21,29)(18,24,22,27)(19,26,25,28)(23,31,30,32)(33,37,38,45)(34,40,35,42)(36,43,44,48)(39,46,41,47)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.