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