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