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