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