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