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