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