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