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