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