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