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