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