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