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