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