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