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