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)(19,27,30,43)(20,31,33,24)(21,35,36,26)(23,37,39,29)(28,44,32,42)(34,41,45,48)(38,47,40,46)(9,10)(11,15)(12,14)(13,16)(17,19,21,29,22,30,36,37)(18,23,26,27,25,39,35,43)(20,32,34,46,33,28,45,47)(24,40,41,44,31,38,48,42)(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)(21,34,36,45)(23,38,39,40)(26,41,35,48)(27,42,43,44)(29,47,37,46)(11,16)(13,15)(19,29)(20,33)(21,36)(23,27)(24,31)(26,35)(28,46)(30,37)(32,47)(38,44)(39,43)(40,42) involution — undirected(1,4,5,3)(2,6,7,8)(10,14)(13,15)(18,25)(20,33)(23,39)(26,35)(27,43)(28,32)(34,45)(46,47)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.