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