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