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