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