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