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