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)(17,18,21,22)(19,25,27,23)(20,24,30,28)(26,32,29,31)(33,34,38,37)(35,41,43,39)(36,40,44,45)(42,47,48,46)(2,6)(7,9)(8,12)(15,16)(17,18,21,22)(19,23,27,25)(20,24,30,28)(26,31,29,32)(33,35)(34,39)(36,42)(37,41)(38,43)(40,46)(44,48)(45,47)(2,6)(7,9)(8,12)(15,16)(18,22)(23,25)(24,28)(31,32)(36,44)(40,45)(42,48)(46,47) involution — undirected(1,2)(3,7)(4,12)(5,6)(8,14)(9,11)(10,16)(13,15)(17,18)(19,23)(20,28)(21,22)(24,30)(25,27)(26,32)(29,31)(33,36)(34,40)(35,42)(37,45)(38,44)(39,46)(41,47)(43,48) involution — undirected(1,3,5,11)(2,7,6,9)(4,13,14,10)(8,16,12,15)(17,19,21,27)(18,23,22,25)(20,29,30,26)(24,32,28,31)(33,35)(34,41)(36,42)(37,39)(38,43)(40,47)(44,48)(45,46)(1,4,5,14)(2,8,6,12)(3,10,11,13)(7,15,9,16)(17,20)(18,24)(19,26)(21,30)(22,28)(23,31)(25,32)(27,29)(33,37,38,34)(35,41,43,39)(36,40,44,45)(42,46,48,47)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.