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