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