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