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