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