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