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