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