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