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