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