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