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