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