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