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