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