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