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