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