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