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