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