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