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