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