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