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