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