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