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