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