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