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